Calcium Hydroxylapatite Filler
Radiesse is a calcium hydroxylapatite filler, and what a filler is made of shapes what you should ask about its upkeep. PubMed Central describes Radiesse as composed of calcium hydroxylapatite microspheres suspended in a carboxymethylcellulose gel.
What controlled trials say about outcomes
For readers around Rye who want more than a product description, a systematic review of controlled clinical trials, calcium hydroxylapatite and aesthetic outcomes, pulls the trial evidence into one place. It is a source to bring to a clinic when you ask how results are measured.

How the major bodies describe fillers
Calcium hydroxylapatite sits inside the wider filler category, and that category has its own published guidance. Cleveland Clinic keeps an overview of dermal fillers for patients. The American Society for Dermatologic Surgery covers fillers on its injectables page, and the American Academy of Dermatology publishes a fillers overview.
Two long-term questions about Radiesse
Each article below follows one question past the first appointment.
- Radiesse for Hand Rejuvenation looks at the product used on the hands and the upkeep question that follows.
- Radiesse as a Regenerative Treatment looks at the idea that a filler can do more than fill, and what to ask a clinic that offers it.
Where the failure side of this decision lives
Filler durability depends on what was injected and who supplied it. Dermal fillers as medical devices covers the regulation side, and botulinum toxin safety and sourcing shows how the same sourcing question applies to an injectable that is not a filler.